Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

San Antonio → Boston via Detroit: arrives on time 54%

  1. 11:29 SAT → 15:35 DTW
    DL 788 · Delta · 3h 06m · 89% on time, 0.9% cancelled
  2. 2h 22m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 17:57 DTW → 20:00 BOS
    DL 1707 · Delta · 2h 03m · 57% on time, 3.0% cancelled

Total trip 7h 31m, scheduled departure to arrival (Boston is 1 h ahead of San Antonio). Times are local. Both flew on 41 of the last 56 days.

Makes the connection99%The first flight arrived more than 97 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 2h 22m layover.
Arrives on time54%First flight not cancelled (0.9% are) × connection made (99%) × second flight not cancelled (3.0% are) and within 15 minutes (57%).
Total trip7h 31mSAT 11:29 to BOS 20:00, layover included

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.